[kaitai]

1) Do note that most college professors receive no training or education in teaching. That's not what many are hired for; it's sort of peripheral to the job. It's not a CS-only problem, either.

2) The post does not advocate racial segregation, but desegregation. And as noted in the comments, interventions targeted at improving learning for women/racial minorities/veterans/distance students/etc tend to improve learning for everyone.